Hi,
We can also see that you site has two versions. An https one and a non-https one. This is bad for SEO as Google thinks you have two sites and may affect how Yoast works. You should enter rules in your server to make all your non-https URLs get redirect to the https ones. Unfortunately, Yoast SEO Premium is unable to make this redirect. We suggest speaking to your host provider as they can help enter those rules into your server.
Once you have the right rules, go to SEO-General and confirm that HTTPs is a part of the site and WordPress URL fields. If it is not, be sure to add it. If you do not have those fields or if you cannot edit them, your host provider can help. As a best practice before editing those fields we suggest taking a backup. If you are not sure how to do that, your host provider can help.
Once you do that, clear all the caching on the site and see see if issue is resolved.
